Rachet and Clank are back! And this time they have to stop the evil Dr. Nefarious from destroying all organic life in the universe. The gameplay has stayed the same. X is jump, O is shoot, Square is use the wrench, Triangle is the quick-select menu, and the analog stick or the d-pad is to move. This game feels like it has more of a military feel to it. This may be due to the fact that you often fight along with a small squad of robots. The space ship battles are gone. Giant Clank fights return though, as well as the Clank platforming stages. The game also now has a split-screen multiplayer mode as well as an online mode. In these you can play games like Deathmatch and Capture the Flag.
The weapons are as crazy as ever. The usual weapon that changes enemies into animals. This time it is the Quack-O-Ray, that changes enemies into ducks. Some others are the Infector, which turns enemies against eachother and themselves. The Flux Rifle, which is a standard sniper rifle. And the Annialator, which is a missle launcher. All of the weapons are upgradeable.
In conclusion, Up Your Arsenal is a good game. I reccomend it.